Office desk



FIG. 1 is a top perspective view of an office desk showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for an office desk, as shown. 